<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.global.js"></script>
</head>

<body>
    <div id="app">
        <ul id="array-with-index">
            <li v-for="(item, index) in items">
                {{ parentMessage }} - {{ index }} - {{ item.message }}
            </li>
        </ul>

        <div v-for="item of items">
            {{item}}
        </div>
    </div>

    <script>
        Vue.createApp({
            data() {
                return {
                    parentMessage: 'Parent',
                    items: [
                        { message: 'Foo' },
                        { message: 'Bar' }
                    ]
                }
            }
        }).mount('#app')
    </script>
</body>

</html>